XDPDROP
XDPDROP is a term sometimes used to refer to the action of discarding a packet within the Linux kernel’s eXpress Data Path (XDP) framework. The official spelling and symbol used by kernel documentation is XDP_DROP, and XDPDROP is often encountered as an informal variant or shorthand. In any case, the action signals that a packet should be discarded and not delivered to the kernel network stack.
In practice, an XDP program written in eBPF attached to a network interface can return XDP_DROP for
Common use cases for the drop action include DDoS mitigation, simple access-control lists on ingress, and early-drop
XDP_DROP is part of the XDP feature set introduced in the Linux kernel and has evolved with